that video you posted! the excursions on that W7 seem very low, the beauty about the W7 is that you are meant to abuse the crap out of them as thats what they are built/known for!
im not saying that they are the best subs ever etc but your video compared to one i made of mine are completely different! and they are both 10W7 subs!
so your going for the Alpine one now instead? you selling the W7?? lol
E92 - 325D M Sport